I agree, 205-40 up front and 255-40 out back.
I know Borbet makes wheels in all kinds of sizes and offsets.
I would go 2" up front and 3" out back, with some simple deep dish wheels. Dump the car, get wide running boards and it'll look mean!
You may want to pick around at
www.vwvortex.com The H2O "euro look" is all about deep dish wheels. You'll be sure to find a few more wheel types there.